PCOS, or polycystic ovary syndrome, is when your ovaries go a bit haywire and start churning out too many hormones, messing with your whole reproductive system. Nowadays, it’s pretty common, hitting about 15% of gals in their baby-making years. It brings along a bunch of signs like wonky periods, extra facial hair, maybe some extra pounds, acne, darkened skin patches, and even trouble getting pregnant. We’re not totally sure what causes it, but genetics, carrying extra weight, and funky hormone and insulin levels seem to be part of the mix.